Zero-day flaw reported in Windows Vista, Server 2008

Microsoft reported a zero-day flaw affecting Windows Vista and Windows Server 2008 on Tuesday. However, it said that the flaw doesn’t affect Windows 7, contrary to earlier reports.

The flaw due to vulnerabilities on Microsoft Server Message Block (SMB) implementations can be used for Remote Code Execution (RCE). Microsoft, however, denied any reported attacks on systems running on any of these operating systems.

According to Microsoft, the vulnerability could be used to take complete control of a system. it also added “Most attempts to exploit this vulnerability will cause an affected system to stop responding and restart.”